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ARM: 5597/1: [PCI] reset all internal hardware prior PCI initialization

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Make software reset to avoid freeze if PCI bus was messed up

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Yegor Yefremov
2009-07-09 08:48:03 +01:00
committed by Russell King
parent 0a52ac8d18
commit 320145fac9
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-ks8695/pci.c
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@@ -245,6 +245,9 @@ static int ks8695_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs
static void __init ks8695_pci_preinit(void) static void __init ks8695_pci_preinit(void)
{ {
/* make software reset to avoid freeze if PCI bus was messed up */
__raw_writel(0x80000000, KS8695_PCI_VA + KS8695_PBCS);
/* stage 1 initialization, subid, subdevice = 0x0001 */ /* stage 1 initialization, subid, subdevice = 0x0001 */
__raw_writel(0x00010001, KS8695_PCI_VA + KS8695_CRCSID); __raw_writel(0x00010001, KS8695_PCI_VA + KS8695_CRCSID);